• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Epizoochory in a hedgerow habitat: seasonal variation and selective diaspore adhesion
【24h】

Epizoochory in a hedgerow habitat: seasonal variation and selective diaspore adhesion

机译：篱笆生境中的食道动物：季节变化和选择性渗水

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Epizoochory has been less studied than other seed dispersal mechanisms, such as endozoochory, and generally only a small percentage of plant species show adaptations to this strategy. Nevertheless, epizoochorous seed dispersal can affect an appreciable number of herb species in forests and man-made habitats. Also, few studies have dealt with temporal variation in epizoochory. In this paper, medium-long distance epizoochory is analyzed in a hedgerow habitat for the first time, using a domestic dog in an area in northwest Spain. Special attention is paid to seasonal variation and differential traits of plant taxa involved. Approximately 30 % of available herb taxa were found attached to hair. The in-termonthly difference in the frequency of the taxa involved in epizoochory was significant, and the overall peak was reached in June-October linked with diaspore ripening phenology. Ninety-three percent of the plant taxa adhered to hair had diaspores with traits facilitating epizoochory (hooks, spines, awns, rigid hairs), in comparison with 17 % for available plant taxa not adhered to hair. The taxa involved in epizoochory had larger diaspores than the rest of the available taxa, but ranged considerably in size. Numerous hooks covered the largest, heaviest diaspores, and allowed them to attach to hair. There was no significant difference in mean plant height between taxa involved in epizoochory and the rest of the available taxa. The difference in life span between taxa involved in epizoochory and the rest of available taxa was not significant, most of them being perennials in both cases. Seventy-three percent of all the available plant taxa were potential forest plants typically found in edges and gaps, and 64 % of the plant taxa involved in epizoochory were these kinds of potential forest plants. High or medium involuntary positive selection by the dog of diaspores of Taraxacum gr. officinale, Galium aparine, Geum urbanum, and Agrimonia eupatoria was observed. In conclusion, epizoochorous dispersal can be quantitatively and functionally important in hedgerow habitats during summer-autumn, affecting mainly herb taxa with specialized diaspores.
机译：相对于其他种子传播机制（例如，内胚乳），对兽足动物的研究较少，通常只有一小部分植物物种适应这种策略。然而，附生种子的散布会影响森林和人工栖息地中相当数量的草本物种。而且，很少有研究处理附睾的时间变化。本文首次使用西班牙西北部地区的家犬对树篱栖息地进行了中长距离的动物寄居性分析。应特别注意所涉及植物分类单元的季节性变化和差异性状。发现约有30％的可用药草类群附着在头发上。附睾类群的分类单元频率的月度差异是显着的，并且在6月至10月达到了最高峰，这与渗水成熟现象有关。附着在头发上的植物类群中有百分之九十三具有渗水孔，具有促进附睾的特性（钩，刺，芒，硬毛），而未附着在头发上的可用植物类中有17％。附生动物的分类单元比其他可用分类单元具有更大的水生孢子，但大小不等。无数的钩子覆盖了最大，最重的diaspores，并使其附着在头发上。附生动物分类单元与其余可用分类单元之间的平均株高没有显着差异。附睾类群和其余可用类群之间的寿命差异不显着，在这两种情况下，大多数都是多年生植物。所有可用植物类群中的73％是通常在边缘和缝隙中发现的潜在森林植物，而附生动物中涉及的植物类群的64％是这些潜在的森林植物。狗对蒲公英蒲公英的高或中度非自愿阳性选择。观察到了厚朴，Gal蒿素，都市锦葵和Ag草。总之，在夏季-秋季，篱笆生境中的表生动物散布在数量和功能上可能很重要，主要影响具有特殊硬生孢子的草本类群。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号